AMD is planning to release a revision of the Radeon R9 280X this late-November, based on the new "Tahiti-XTL" silicon. Originally designed to be based on that ASIC, the R9 280X ended up being based on "Tahiti XT2," the same exact ASIC that drives the Radeon HD 7970 GHz Edition, as "Tahiti XTL" wasn't ready for its early-October launch. The new silicon promises lower power consumption, heat output, and in turn, lower fan noise output. AMD won't announce the revision, but perform a "running change" for its add-in board partners. The only way you'll be able to tell it's a "Tahiti XTL" based R9 280X, apart from disassembling the card, will be reading its BIOS.